Categories
Attention fMRI Memory Papers

New paper in Neu­roIm­age, Lim et al.

Atten­tion lets us focus our lim­it­ed cog­ni­tive resources on behav­ioral­ly impor­tant infor­ma­tion. Less obvi­ous is that atten­tion also helps us to hold infor­ma­tion in mem­o­ry with high pre­ci­sion. But how does the brain imple­ment this direct­ed atten­tion to mem­o­ry, and what behav­iour­al ben­e­fits does it yield for us humans?

For­mer post­doc Sung-Joo Lim (now at Bing­ham­ton Uni­ver­si­ty), Jonas Obleser, and a team of col­lab­o­ra­tors from Old­en­burg (Chris­tiane Thiel) and Leipzig (Bern­hard Sehm, Lorenz Deser­no, and Jöran Lep­sien) have now a new arti­cle on this old prob­lem, to appear in NeuroImage.

Using the changes in brain blood oxy­gena­tion as mea­sured with fMRI, this study demon­strates that atten­tion enables mem­o­ry main­te­nance of speech sound infor­ma­tion across mul­ti­ple brain regions. A speech-sen­si­tive brain region in the tem­po­ral lobe (the left supe­ri­or tem­po­ral sul­cus) con­tributes the most in pre­dict­ing the indi­vid­ual gain in recall pre­ci­sion of audi­to­ry objects from mem­o­ry. This study high­lights that func­tion­al­ly dis­crete brain regions work togeth­er in main­tain­ing and atten­tion­al­ly enhanc­ing work­ing mem­o­ry infor­ma­tion, but they exert dif­ferental influ­ences depend­ing on their func­tion­al specializations.

The full arti­cle is now avail­able here.

Categories
Brain stimulation Memory Papers Psychiatry Publications Sleep

New Paper in Jour­nal of Sleep Research by Wein­hold et al.

In a col­lab­o­ra­tion with Sara Lena Wein­hold and Robert Göder at the Chris­t­ian-Albrechts-Uni­ver­si­ty Kiel, Hong-Viet V. Ngo recent­ly pub­lished a study inves­ti­gat­ing the influ­ence of audi­to­ry stim­u­la­tion dur­ing sleep on mem­o­ry con­sol­i­da­tion in peo­ple with schizophrenia.

The study shows that audi­to­ry stim­u­la­tion tar­get­ing slow oscil­la­tions – a key rhythm medi­at­ing mem­o­ry pro­cess­ing – in real-time in peo­ple with schiz­o­phre­nia results in an elec­tro­phys­i­o­log­i­cal response that is sim­i­lar to that in healthy par­tic­i­pants. Albeit an absent effect of stim­u­la­tion on mem­o­ry con­sol­i­da­tion, the authors found the stronger the slow oscil­la­tion enhance­ment the less par­tic­i­pants for­got, i.e., the bet­ter mem­o­ry per­for­mance was, the fol­low­ing morning.

Thus, this paper not only con­firms the over­all fea­si­bil­i­ty of this approach and pro­vides essen­tial elec­tro­phys­i­o­log­i­cal insights. It fur­ther­more high­lights the poten­tial of audi­to­ry stim­u­la­tion to pro­vide alter­na­tive treat­ments for sleep-relat­ed dys­func­tions in patients with schiz­o­phre­nia. The arti­cle will soon be avail­able in Jour­nal of Sleep Research.

Categories
Auditory Perception Auditory Speech Processing Speech

Hot off the press: New chap­ter on neur­al oscil­la­tions in speech per­cep­tion by Tune & Obleser

Neur­al oscil­la­tions are a promi­nent fea­ture of the brain’s elec­tro­phys­i­ol­o­gy and tar­get vari­ables in many speech per­cep­tion stud­ies. For the lat­est edi­tion of the Springer Hand­book Audi­to­ry Research – this time focused on speech per­cep­tion – lab mem­bers Sarah Tune and Jonas Obleser teamed up to take stock of what has been learned about the func­tion­al rela­tion­ship of neur­al oscil­la­tions and speech perception.

By focus­ing on core func­tions and com­pu­ta­tion­al prin­ci­ples, the chap­ter offers a par­si­mo­nious account of the sta­ble pat­terns that have emerged across stud­ies and lev­els of investigations.

You can find a preprint of the chap­ter here and the entire col­lec­tion of chap­ters here.

Categories
Papers Psychology Publications

New paper in Roy­al Soci­ety Open Sci­ence, Wöst­mann et al.

Malte Wöst­mann, Julia Erb, Jens Kre­it­e­wolf, and Jonas Obleser con­duct­ed a large-scale online study to explore the rela­tion­ship between lis­ten­ers’ per­son­al­i­ty and hear­ing-in-noise. In a large sam­ple (N = 1,103), they found that BIG‑5 per­son­al­i­ty dimen­sions neu­roti­cism and extra­ver­sion explained dis­so­ci­a­tions of scores on estab­lished sub­jec­tive ver­sus objec­tive hear­ing-in-noise tests. This research was sup­port­ed by the Inter­na­tion­al Hear­ing Foundation.

The full arti­cle is avail­able here.